Free proprietary software or freeware refers to software that is available to users at no cost. Andrew Fluegelman introduced the idea of freeware in 1982 and the term “freeware” is usually used to describe free proprietary software. It means software users can use the software without making any payments....

Open source software refers to software with a freely accessible source code. The original developers of the software make the code available to the public. Although the code is freely available to anyone, the term “free” does not necessarily mean that OSS is available at no cost. Nevertheless, most open source a...